1,721,221 research outputs found
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Full text link“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Full text linkWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Il gabinetto di fisica dell'Istituto Tecnico "O.G.Costa"a Lecce. Immagini del patrimonio scientifico salentino
No full textDiagnosis of Ineffective Esophageal Motility According to Chicago Classification Version 4.0: More Stringent Criteria, but Also New Difficulties
No full textNovel impedance-pH parameters, Mean Nocturnal Baseline Impedance (MNBI) and
Post-Reflux Swallow-Induced Peristaltic Wave (PSPW) index, have been proposed to improve the
gastro-esophageal reflux disease (GERD) diagnostic yield. This study aims to determine the integrity
of the esophageal epithelial barrier and chemical clearance using these novel parameters and to
correlate them with acid exposure time (AET) and acid clearance time (ACT) in obese patients who
are candidates for bariatric surgery (BS). Twenty impedance-pHmetry tracings of patients prior to BS
were reviewed. Nine (45%) patients with a conclusive diagnosis of GERD had significantly higher
ACT, lower MNBI in the distal esophagus and lower PSPW indexes compared to obese patients
without GERD. Moreover, 100% of obese patients with GERD had a pathological ACT compared
to obese patients without GERD (p = 0.003). However, the percentage of pathological MNBI and
PSPW index did not differ between obese patients with and without GERD. The PSPW index and
MNBI of the distal channel significantly correlated with ACT and AET. Further studies are needed
to assess the role of time-consuming novel parameters in the routine evaluation of morbidly obese
patients candidates for BS. The value of acid clearance time is confirmed as a relevant impedance-pH
parameter in these patients
Assessing yacht design processes: a comparison of traditional and integrated methodologies
Full text linkYacht design process currently faces challenges as slow data sharing, lack of flexibility in modelling and inefficient optimisation of shapes. This paper assesses the potential of an integrated approach over the traditional one, using a hypothetical industry scenario. The key aspects of data sharing/project management, modelling system, and shape optimization are compared, and new collaborative tools and technologies are introduced. The research reveals significant benefits of the integrated approach over the traditional one highlighting its potential to foster innovation within the industry
Metering dell'energia elettrica consumata dall'illuminazione controllata mediante sistema BUS
No full text3D model of the Marche-Abruzzi periadriatic portion of the Apennines fold-and-thrust belt and comparison with seismicity distribution.
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